Part of speech: Adjective (satellite)
liable to sudden unpredictable change
Example: erratic behavior; fickle weather; mercurial twists of temperament; a quicksilver character, cool and willful at one moment, utterly fragile the next
Part of speech: Adjective (satellite)
marked by erratic changeableness in affections or attachments
Example: fickle friends; a flirt's volatile affections